chrome on xp

used chrome on xp yesterday, used to work ok. but was getting a seperate dialouge box open asking for a password to access an application [no details shown], the google account password and the new 6 figure gmail mobile number does not work in in it, pages hang and will not open.
IE and firefox working ok.

done so far
deleted chrome and new install still the same.
full scan by mbam, sas, norton, also ran ccleaner in clean and reg options,